在实际工作中，建立离散变量的回归预报方程是一个不可回避的问题。
It is an inevitable problem to set up a predict equation of discrete variables regression in the practice work.
探讨蒸发量与气象要素之间的关系，分月建立了逐步回归方程，经检验可作为蒸发量的一种客观预报方法。
Stepwise regression equation in each month is established based on the relationship between evaporation and meteorological elements, which is an objective forecast method of evaporation.
对于历史地震资料，准时间可预报复发行为可由地震后平静时间的对数与地震烈度的回归方程描述。
For historic earthquake data, this behavior can be described by the regression equation of logarithm of quiet time after an earthquake versus intensity of this earthquake.
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